We are given a triangle $ABD$ with angle $A = 62^\circ$, angle $B = 14^\circ$, and angle $D = 31^\circ$. We need to find the reflex angle $BCD$.
2025/5/11
1. Problem Description
We are given a triangle with angle , angle , and angle . We need to find the reflex angle .
2. Solution Steps
First, we find the angle .
The sum of angles in a triangle is . Therefore, in triangle ,
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Next, we observe that points are collinear, implying that is a straight line, meaning that angle . Also are collinear, implying that is a straight line, meaning that angle .
In triangle , the sum of the angles is , i.e., .
Therefore, .
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However, the question asks for the reflex angle , which is the angle greater than .
The reflex angle .
Reflex angle .
Since the angles and form a straight line, we have .
Since is a straight line, we know that .
Also, is a straight line, so .
Therefore .
Since we have a triangle , we know that .
The angle at can be found by looking at angles around the point .
Let the angle and the angle .
Also, .
Then .
So, the reflex angle .
We have the triangle . We have , , so .
We know that .
First, calculate . .
Now, we have .
The reflex .
3. Final Answer
225